I originally bought my
Vanguard AltaPro 283 CT for my *slr, it weighs 1.7kg and can carry 8kg. Best thing it the camera is eye-level with the column down. Infinitely-tilting centre column (compared to the Manfrotto 055CXPro's 90/180-only) has proven great for macro, but also for those weird situations shooting ultra-wide angle where I had to push the camera forward to get the legs out of frame (wish I'd taken a photo of the setup at the time).
On top of that an
Arca-Swiss Monoball P0, upside-down panning ballhead, so once you get the top level you can pan any which way horizontally (I used to do a lot of digital-panorama-stitching, but not anymore since I upgraded to 617).
Also, everything I own has proper A-S clamps, including my Kirk SS1 strap, can take anything hiking and clamp to tripod with no fiddling (except the stupid monoball P0 with a clamp is not a true "AS-style" clamp, so had to buy a bare one and Kirk clamp separate).
I've been using it with my Toyo 45GII recently with absolutely no problems in stability or vibration-blur. The upside-down panning is invaluable for 4x5, once I get the thing level I just pan it to the correct view and rise-fall as needed. So far not too far from the car, maybe 200m and 5m up a slippery hill to get a 617 vertical waterfall shot last weekend, or a 1km round-trip trek over rocks at the beach is the furthest I've taken the 4x5 with the tripod. I've also flown with it (both carry-on and underneath), and drove a few thousand kms with it and a Mamiya 645AF last year.
If you've got a lighter field-camera setup, I would highly recommend a similar setup, will also work great for any smaller formats. I've got nothing against pan-tilt heads, as long as the setup stays level as you pan it'll be fine. Just remember you can't always level out by using a levelling base or relying on the legs (depends how adventurous you get in the back-country / outback), urban you're fine but you never know what else you might want to shoot one day (like I said, I bought my kit for my *slr when I had no MF or LF gear at all).
I've now got a Cambo SC 8x10, total weight 10kg or so, so need a new tripod. Definitely thinking no centre-column, you don't really need one with LF (even though I did use it last weekend at the waterfall). Weight is no real factor as long as I can carry it with 10kg worth of 8x10, so I'll be watching this thread for suggestions on heavier cameras too.